From 4694a31f55b7ec2f2dd5e26bff4febc4c550af1b Mon Sep 17 00:00:00 2001
From: softsimon <softsimon@protonmail.com>
Date: Tue, 12 Jan 2021 00:15:52 +0700
Subject: [PATCH] Fix memory leak by not stacking data in the scan accumulator.
 Also handle going from zero to initial graph data on dashboard. fixes #273

---
 frontend/src/app/dashboard/dashboard.component.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/frontend/src/app/dashboard/dashboard.component.ts b/frontend/src/app/dashboard/dashboard.component.ts
index 6f573aac2..745bb7187 100644
--- a/frontend/src/app/dashboard/dashboard.component.ts
+++ b/frontend/src/app/dashboard/dashboard.component.ts
@@ -164,18 +164,18 @@ export class DashboardComponent implements OnInit {
         }),
         scan((acc, [block]) => {
           acc.unshift(block);
+          acc = acc.slice(0, 6);
           return acc;
         }, []),
-        map((blocks) => blocks.slice(0, 6)),
       );
 
     this.transactions$ = this.stateService.transactions$
       .pipe(
         scan((acc, tx) => {
           acc.unshift(tx);
+          acc = acc.slice(0, 6);
           return acc;
         }, []),
-        map((txs) => txs.slice(0, 6)),
       );
 
     this.mempoolStats$ = this.stateService.connectionState$.pipe(
@@ -187,7 +187,7 @@ export class DashboardComponent implements OnInit {
             .pipe(
               scan((acc, stats) => {
                 acc.unshift(stats);
-                acc = acc.slice(0, acc.length - 1);
+                acc = acc.slice(0, 120);
                 return acc;
               }, mempoolStats)
             ),